SPANNERPresented by: Mazhar Iqbal

In British English, spanner is the standard termIn American English, wrench.

Types of Spanners

Ring spanner Combination spanner

Adjustable spanner Pipe Spanner

Alligator wrench Die wrench Chuck key

Allen wrench

Open end Spanner

Drawing

Drawing

Material selection

Mild steel: (0.05–0.3% carbon)

Malleable and ductile

Low tensile strength

Light Weight

Price is relatively low

Manufacturing Processes

Cutting

Milling

Drilling

Sawing

Grinding

Filing

Punching

These Manufacturing processes were used:

Cutting

• By Abrasive Disc

• A rectangular(180×45) sheet was obtained

Punching

After cutting the sheet of dimensions:(180mm×45mm×5mm)

The sheet was punched according to the drawing.

The use of coolant may erase the ink marks so I did punching.

Milling

• Face milling

Face milling

How Milling Was Done?

Grinding

To remove the material from the edges

Drilling

• Through holes

Sawing

• Hack saw to remove material

Surface Finishing

Grinding

Filing

Sand Paper(final)

Grinding

Rough sheet was made smooth

Remove rusty surface(Hand Grinder)

Filing SQUARE FILE:

fits into corners well.

HALF ROUND FILE: for curved surfaces

Round File:Very narrow curved surfaces

Precaution:

Filing

Finishing

Dimensional accuracy(mainly square)

Punching

Spanner Jaw Sizes (Numeric punch)

Name (Letter Stamps)

Final Product

Cutting

Milling

Grinding Drilling

Sawing

Grinding Filing

Punching

Process Summary

Problems

Material problem(Rusty scrap)

The Letter stamp was smaller than Numeric Punch.

Filing(not as smooth as required for finishing)

22

References

• http://en.wikipedia.org/w/index.php?title=Punch_%28tool%29&action=edit&section=10

• http://www.technologystudent.com

• http://www.sat.dundee.ac.uk/~psc/spanner_jaw.html

• http://en.wikipedia.org/wiki/Carbon_steel#Mild_and_low-carbon_steel

Thank You